CN107355914A - A kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure - Google Patents
A kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure Download PDFInfo
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- CN107355914A CN107355914A CN201710451832.9A CN201710451832A CN107355914A CN 107355914 A CN107355914 A CN 107355914A CN 201710451832 A CN201710451832 A CN 201710451832A CN 107355914 A CN107355914 A CN 107355914A
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- fixed plate
- radiating tube
- refrigerant
- refrigerant radiating
- heater members
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Abstract
The invention discloses a kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure, by obtaining the refrigerant temperature T2 of the heat radiation power P of heater members, the limit high temperature T1 of heater members, refrigerant radiating tube inlet, calculates △ T=T1 T2；According to heat-conduction principle, the variable element of predetermined heat dissipation structure：The thermal resistance R1 of fixed plate, the contact area A1 of fixed plate and heater members, contact area A2, the thermal resistance R2 of refrigerant radiating tube of refrigerant radiating tube and fixed plate；After operation of air conditioner setting time, the Current Temperatures Ta of heater members is gathered, judges Current Temperatures Ta whether in the range of design temperature；If it is not, the variable element of radiator structure is then readjusted, until Current Temperatures Ta is in the range of design temperature；The blindness of traditional heat-dissipating structure design is avoided, improves the reliability and stability of radiating, reduces radiating cost, there is preferable radiating effect, improves the stability and reliability of radiating element operating.
Description
Technical field
The invention belongs to air-conditioning technical field, specifically, be related to a kind of air-conditioning heat dissipation structural parameter determining method and
Air-conditioning heat dissipation structure.
Background technology
At present convertible frequency air-conditioner with its intelligent, energy-efficient, low noise, temperature adjustment speed is fast the advantages that be commercially available it is wide
General use.Convertible frequency air-conditioner is the control system by Frequency Converter Control and adjustment compressor rotary speed, is allowed to be in all the time most preferably
Rotary regimes, but frequency converter can produce very big heat in itself simultaneously, if heat caused by frequency converter can not shed in time, enter
And the control of compressor operating frequency is directly affected, press can be caused to be stopped when serious.Therefore, the radiating of frequency converter is set
Count most important.
And the heat dissipation design of traditional frequency conversion device largely uses the design method of cooling fan, on the one hand its shortcoming is cooling
Fan cooling effect is poor, and secondly, the service life of cooling fan is limited, and spoilage is high, and it is one for fan life to operate for a long time
The huge test of kind, cooling fan directly affect the job stability of frequency-variable module if failure, if the life-span of increase fan
Then cost can increase bigger, be unfavorable for Product Cost Control.
The content of the invention
The invention provides a kind of air-conditioning heat dissipation structural parameter determining method, solves the reliability that radiates in the prior art
Low, the problem of radiating effect is poor.
In order to solve the above technical problems, the present invention is achieved using following technical proposals：
A kind of air-conditioning heat dissipation structural parameter determining method, the radiator structure includes fixed plate, refrigerant radiating tube, described solid
The one side of fixed board is fixed with air-conditioning heater members, and another side is fixed with refrigerant radiating tube, the refrigerant radiating tube serial or parallel connection
In refrigerant pipeline between outdoor heat exchanger of air conditioner and indoor heat exchanger；
Methods described includes：
(1) the heat radiation power P of heater members, the limit high temperature T1 of heater members, the refrigerant of refrigerant radiating tube inlet are obtained
Temperature T2；Calculate △ T=T1-T2；
(2) according to heat-conduction principle, the variable element of predetermined heat dissipation structure：
It is the thermal resistance R1 of the variable element of radiator structure including fixed plate, the contact area A1 of fixed plate and heater members, cold
Matchmaker's radiating tube and the contact area A2 of fixed plate, the thermal resistance R2 of refrigerant radiating tube；
(3) after operation of air conditioner setting time, the Current Temperatures Ta of heater members is gathered；
(4) judge Current Temperatures Ta whether in the range of design temperature；
If it is not, the variable element of radiator structure is then readjusted, and return to step (3).
Further, the fixed plate includes the first fixed plate and the second fixed plate, first fixed plate and heating element
Part is fixed, and second fixed plate is fixed with the first fixed plate, and second fixed plate is fixed with refrigerant radiating tube；Described first
Fixed plate and the contact area of heater members are A1, the contact area of refrigerant radiating tube and the second fixed plate is A2；First fixes
The contact area of plate and the second fixed plate is A3；The variable element of radiator structure also includes the first fixed plate and the second fixed plate
Contact area A3, the thermal resistance R11 of the first fixed plate, the thermal resistance R12, R11+R12=R1 of the second fixed plate.
Further, the heat-conducting medium that thermal resistance is r1 is scribbled on the contact surface of the first fixed plate and heater members,
The heat-conducting medium that thermal resistance is r2 is scribbled on refrigerant radiating tube and the contact surface of the second fixed plate, is fixed in the first fixed plate and second
The heat-conducting medium that thermal resistance is r3 is scribbled on the contact surface of plate；The variable element of radiator structure also includes thermal resistance r1, r2, r3.
Further, neck is laid with the second fixed plate, refrigerant radiating tube is laid in neck, refrigerant radiating tube with
The contact area of second fixed plate is the contact area of refrigerant radiating tube and neck.
Further, the contact area of refrigerant radiating tube and the second fixed plate is A2=π * d*L*3/4, and d dissipates for refrigerant
The diameter of heat pipe, L are refrigerant radiating tube and the contact length of the second fixed plate.
Preferably, when readjusting the variable element of radiator structure, refrigerant radiating tube and second is readjusted first and is fixed
The contact area A2 of plate, step (3), (4) are performed, if readjusting refrigerant radiating tube and the contact area A2 of the second fixed plate is set
After determining number, Current Temperatures Ta still not in the range of design temperature, then readjust A3, A1, R1, R2, perform step (3),
(4)。
Further, the contact area A2 for readjusting refrigerant radiating tube and the second fixed plate dissipates including readjusting refrigerant
Heat pipe and the contact length of the second fixed plate, the diameter of refrigerant radiating tube.
Further, contact length, the diameter of refrigerant radiating tube of refrigerant radiating tube and the second fixed plate are readjusted
When, refrigerant radiating tube and the contact length of the second fixed plate are readjusted first, step (3), (4) are performed, if readjusting cold
After matchmaker's radiating tube and the contact length of the second fixed plate first set number, Current Temperatures Ta still not in the range of design temperature,
The diameter of refrigerant radiating tube is adjusted again, performs step (3), (4)；The number for adjusting refrigerant radiating pipe diameter is no more than the second setting
Number；First setting number and the second setting number sum are equal to setting number.
Further, when readjusting A3, A1, R1, R2, A3 is readjusted first, performs step (3), (4), if weight
After new adjustment A3 setting numbers, Current Temperatures Ta performs step still not in the range of design temperature, then readjust A1, R1, R2
(3)、(4)。
A kind of air-conditioning heat dissipation structure, including fixed plate, refrigerant radiating tube, one side and the air-conditioning heater members of the fixed plate
Fixed, another side and the refrigerant radiating tube of the fixed plate are fixed, and the refrigerant radiating tube serial or parallel connection changes outside air conditioning chamber
In refrigerant pipeline between hot device and indoor heat exchanger；Air-conditioning heat dissipation structural parameter determining method includes：(1) heater members are obtained
Heat radiation power P, heater members limit high temperature T1, refrigerant radiating tube inlet refrigerant temperature T2；Calculate △ T=T1-T2；
(2) according to heat-conduction principle, the variable element of predetermined heat dissipation structure：The variable element of radiator structure includes the thermal resistance of fixed plate
R1, fixed plate and heater members contact area A1, the contact area A2 of refrigerant radiating tube and fixed plate, the heat of refrigerant radiating tube
Hinder R2；(3) after operation of air conditioner setting time, the Current Temperatures Ta of heater members is gathered；(4) judge whether Current Temperatures Ta is setting
In the range of constant temperature degree；If it is not, the variable element of radiator structure is then readjusted, and return to step (3).
Compared with prior art, the advantages and positive effects of the present invention are：The air-conditioning heat dissipation structural parameters of the present invention determine
Method and air-conditioning heat dissipation structure, radiated by obtaining the heat radiation power P of heater members, the limit high temperature T1 of heater members, refrigerant
The refrigerant temperature T2 of tube inlet, calculate △ T=T1-T2；According to heat-conduction principle, the variable element of predetermined heat dissipation structure：It is fixed
The thermal resistance R1 of plate, the contact area A1 of fixed plate and heater members, contact area A2, the refrigerant of refrigerant radiating tube and fixed plate dissipate
The thermal resistance R2 of heat pipe；After operation of air conditioner setting time, gather the Current Temperatures Ta of heater members, judge Current Temperatures Ta whether
In the range of design temperature；If it is not, the variable element of radiator structure is then readjusted, until Current Temperatures Ta is in design temperature scope
It is interior；The blindness of traditional heat-dissipating structure design is avoided, improves the reliability and stability of radiating, the variable ginseng of radiator structure
Number it is easy to adjust, reduce radiating cost, realize preferable radiating effect, improve radiating element operating stability and can
By property；Solve the problems, such as that radiating reliability is low in the prior art, cost is high.
After the embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of air-conditioning heat dissipation structure proposed by the present invention；
Fig. 2 is Fig. 1 partial schematic diagram；
Fig. 3 is Fig. 2 front view；
Fig. 4 is Fig. 2 side view；
Fig. 5 is the air conditioning structure diagram of the refrigerant radiating tube connection in Fig. 1；
Fig. 6 is the flow chart of one embodiment of air-conditioning heat dissipation structural parameter determining method proposed by the present invention.
Reference：
P, electrical control cubicles；1st, the first fixed plate；2nd, the second fixed plate；2-1, neck；3rd, refrigerant radiating tube；4th, bolt；5th, send out
Thermal device；
11st, outdoor heat exchanger；12nd, indoor heat exchanger；13rd, device for drying and filtering；14th, electric expansion valve；15th, check valve；16、
Check valve；17th, check valve；18th, check valve；
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples,
The present invention is described in further detail.
The present invention proposes a kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure, avoids traditional heat-dissipating
The blindness of design, the reliability and stability of radiating are improved, solve and radiate that reliability is low, radiating effect in the prior art
Difference, the problem of maintenance cost is high.The determination method of air-conditioning heat dissipation structure and air-conditioning heat dissipation structural parameters is illustrated below.
In the present invention, heat-conduction principle is applied to, when heat is conducting on medium, the fundamental formular of heat transfer is：
Formula (1)：Q=λ * (T10-T20) * t*A/ δ；
Wherein, Q is heat dissipation capacity, and λ is the thermal conductivity factor of medium, and δ is the medium length of conduction orientation；T10, T20 are conduction
The respective temperature in direction medium both sides；T is conduction time；A is contact area.
Formula (2)：Heat radiation power P=Q/t,
Formula (3)：△ T=T10-T20；
Formula (2), (3) are substituted into formula 1, draw formula (4),
Formula (4)：△ T=(P/A) * (δ/λ).
When having n medium in conduction orientation, length of the n medium in conduction orientation is respectively δ 1, δ 2, δ
3rd ... the thermal conductivity factor of, δ n, n media be respectively λ 1, λ 2, λ 3 ..., λ n, two neighboring medium contact area difference
For a1, a2, a3 ..., an, then release following formula (5)：
The thermal resistance of n medium be respectively the λ 1 of r1=δ 1/, the λ 2 of r2=δ 2/, the λ 3 of r3=δ 3/ ..., rn=δ n/ λ n.
The air-conditioning heat dissipation structure of the present embodiment mainly includes fixed plate, refrigerant radiating tube 3 etc., the one side and air-conditioning of fixed plate
Heater members 5 are fixed, and another side is fixed with refrigerant radiating tube 3, and the serial or parallel connection of refrigerant radiating tube 3 is in outdoor heat exchanger of air conditioner 11
In refrigerant pipeline between indoor heat exchanger 12, referring to shown in Fig. 1 to Fig. 5.
The structure of air-conditioning is shown in Figure 5.
Coolant loop during air conditioner refrigerating operating mode：Compressor → oil eliminator → four-way valve (C-channel) → outdoor heat exchanger
11 15 → fluid reservoirs of (fin condenser) → check valve → 13 → electric expansion valve of device for drying and filtering, 14 → check valve 18 → interior
Heat exchanger 12 (dry evaporator) → four-way valve (channel S) → gas-liquid separator → compressor.
Coolant loop during air-conditioning heating operating mode：Compressor → oil eliminator → four-way valve (E passages) → indoor heat exchanger
12 17 → fluid reservoirs of (dry evaporator) → check valve → 13 → electric expansion valve of device for drying and filtering, 14 → check valve 16 → outdoor
Heat exchanger 11 (fin condenser) → four-way valve (channel S) → gas-liquid separator → compressor.
In pipeline of the serial or parallel connection of refrigerant radiating tube 3 between fluid reservoir and electric expansion valve 14, i.e. electric expansion valve
In pipeline before 14 throttlings, by setting four check valves (check valve 15,16,17,18), you can freezing and heating to realize
Under operating mode, the refrigerant temperature in refrigerant radiating tube 3 is maintained within a certain range, and typically at 40 DEG C~60 DEG C, will not produce condensation
Problem.
Radiator structure has the variable element of multiple influence radiating effects, it is necessary to be determined to variable element, makes radiating
The radiating effect that structure has had.
The air-conditioning heat dissipation structural parameter determining method of the present embodiment specifically includes following step, shown in Figure 6.
Step S11：Obtain the heat radiation power P of heater members, the limit high temperature T1 of heater members, refrigerant radiating tube inlet
Refrigerant temperature T2, calculate △ T=T1-T2.
The heat radiation power P of heater members is the preset parameter of heater members, i.e. P is definite value；Such as P=input power * (1-
η), η is power factor.The limit high temperature T1 of heater members is the limit high temperature that heater members can run well, and is also definite value.
The refrigerant temperature T2 of refrigerant radiating tube inlet is also definite value when air-conditioning runs well.I.e. P, T1, T2 are definite value, and △ T are also
Definite value.
Step S12：According to heat-conduction principle, the variable element of predetermined heat dissipation structure：
Influence connecing for the thermal resistance R1 of the variable element including fixed plate of radiator structure radiating effect, fixed plate and heater members
Contacting surface product A1, refrigerant radiating tube and fixed plate contact area A2, the thermal resistance R2 of refrigerant radiating tube.
The conduction orientation of heater members heat is：Heater members → fixed plate → refrigerant radiating tube, according to formula (5), obtain
Go out：△ T=P*R1/A1+P*R2/A2.
P, △ T are, it is known that R1, A1, R2, A2 value rule of thumb, can be predefined.It is previously determined the variable of radiator structure
After parameter, the radiator structure with predetermined variable parameter is used for the radiating of heater members, subsequently also needs to verify the radiating knot
The radiating effect of structure.
Step S13：After operation of air conditioner setting time, the Current Temperatures Ta of heater members is gathered.
After radiator structure is used on air-conditioning heat dissipation device, operation of air conditioner setting time, the current temperature of heater members is gathered
Ta is spent, for verifying the radiating effect of radiator structure.
Step S14：Judge Current Temperatures Ta whether in the range of design temperature.
When the temperature of heater members is higher than limiting temperature T1, heater members can not normal work, therefore heater members
Temperature needs to be less than T1, therefore design temperature scope is (- ∞, T1).Assuming that heater members are frequency converter, the limit of frequency converter is high
Warm T1 is 90 DEG C, then design temperature scope is (- ∞, 90 DEG C).
When being less than its limit low temperature T4 in order to avoid heater members can not normal work, therefore design temperature scope for (T4,
T1), i.e. the temperature of heater members is needed at (T4, T1).Because the temperature of frequency converter can not when less than limit low temperature (50 DEG C)
Normal work, therefore design temperature scope (50 DEG C, 90 DEG C).
If Current Temperatures Ta not in the range of design temperature, illustrates that the radiator structure with current variable element is unsatisfactory for dissipating
Heat demand, then perform step S15.
If Current Temperatures Ta in the range of design temperature, illustrates that the radiator structure with current variable element meets radiating need
Ask, then perform step S16.
Step S15：Readjust the variable element of radiator structure, return to step S13.
Current Temperatures Ta not in the range of design temperature, shut down by air-conditioning, readjusts the variable element of radiator structure, radiating
The variable element of structure is then back to step S13 including R1, A1, R2, A2 etc..
Because contact area is bigger, radiating effect is better, and Ta is smaller；Thermal resistance is bigger, and radiating effect is poorer, and Ta is bigger, because
This readjusts the variable element of radiator structure according to Current Temperatures Ta value.
Step S16：The final variable element for determining radiator structure.
Radiator structure with current variable element meets radiating requirements, the radiating effect having had, final to determine radiating
The variable element of structure, i.e., finally determine radiator structure.
The air-conditioning heat dissipation structural parameter determining method of the present embodiment, by the heat radiation power P, the heating element that obtain heater members
Limit high temperature T1, the refrigerant temperature T2 of refrigerant radiating tube inlet of part, calculate △ T=T1-T2；According to heat-conduction principle, make a reservation for
The variable element of radiator structure：The thermal resistance R1 of fixed plate, the contact area A1 of fixed plate and heater members, refrigerant radiating tube are with consolidating
The contact area A2 of fixed board, the thermal resistance R2 of refrigerant radiating tube；After operation of air conditioner setting time, the Current Temperatures of heater members are gathered
Ta, judge Current Temperatures Ta whether in the range of design temperature；If it is not, the variable element of radiator structure is then readjusted, until
Current Temperatures Ta is in the range of design temperature；The blindness of traditional heat-dissipating structure design is avoided, improves the reliability of radiating
And stability, the variable element of radiator structure is easy to adjust, reduces radiating cost, realizes preferable radiating effect, improves
The stability and reliability of radiating element operating；Solve the problems, such as that radiating reliability is low in the prior art, cost is high.
The radiator structure of variable element is determined using the above method, is passed the heat of heater members using heat-conduction principle
It is delivered in coolant system so that the temperature of radiating element is maintained in the range of design temperature, ensures radiating element and air-conditioning
Normal operation, reliability is high, cost is low；Radiated using refrigerant, energy-conservation is reliable, ensures the long-term high-efficiency operation of heater members；
Cost is low, easy to installation and maintenance, is easy to dismount, improves production efficiency, is easy to market to detect after sale, repair and changes, drop
The production cost and maintenance cost of low heat emission structure.
Because heater members 5 are generally placed in air conditioner electric control cabinet P, in order to ensure electrical control cubicles P and heat-generating components inside
Security, fixed plate includes the first fixed plate 1 and the second fixed plate 2, and the first fixed plate 1 is located in electrical control cubicles P, and second fixes
Plate 2 is located at outside electrical control cubicles, and one side and the heater members 5 of the first fixed plate 1 are fixed, the another side and second of the first fixed plate 1
The one side of fixed plate 1 connects fastening by bolt 4 (tightening torque needs 6kgcm or so)；The another side of second fixed plate 2 with it is cold
Matchmaker's radiating tube 3 is fixed；First fixed plate 1 and the contact area of heater members 5 are A1, the fixed plate 2 of refrigerant radiating tube 3 and second
Contact area is A2；First fixed plate 1 contacts with the second fixed plate 2 for face, contact area A3.Therefore, radiator structure can
Variable element also includes the contact area A3 of the first fixed plate 1 and the second fixed plate 2, the thermal resistance R11 of the first fixed plate 1, second consolidated
The thermal resistance R12, R11+R12=R1 of fixed board 2.Thus, the conduction orientation of heater members heat is：The fixed plate of heater members → first
→ the second fixed plate → refrigerant radiating tube, according to formula (5), draw：
△ T=P*R11/A1+P*R12/A3+P*R2/A2.
In order to improve heat-conducting effect, the heat conduction that thermal resistance is r1 is scribbled on contact surface of first fixed plate 1 with heater members 5
Medium 1, the heat-conducting medium 2 that thermal resistance is r2 is scribbled on the contact surface of the fixed plate 2 of refrigerant radiating tube 3 and second, is fixed first
The heat-conducting medium 3 that thermal resistance is r3 is scribbled on the contact surface of the fixed plate 2 of plate 1 and second.Therefore, the variable element of radiator structure also wraps
Include thermal resistance r1, r2, r3.Because the smaller radiating effect of thermal resistance is better, therefore thermal conductivity factor is the higher the better, and heat-conducting medium may be selected to lead
The good silica gel of thermal effect.The finish of second fixed plate and the first fixed plate contact surface, machining accuracy can be adjusted to 0.1 by 0.2,
Increase contact area and reduce thermal resistance.Thus, the conduction orientation of heater members heat is：Heater members → heat-conducting medium 1 → the first
Fixed plate → 3 → the second fixed plates of heat-conducting medium → heat-conducting medium 2 → refrigerant radiating tube, using formula (5), draws：
△ T=P*r1/A1+P*R11/A1+P*r3/A3+P*R12/A3+P*r2/A2+P*R2/A2.
Therefore, the variable element of radiator structure includes：A1, A2, A3, R1 (i.e. R11, R12), R2, r1, r2, r3.
Dismounted for the ease of refrigerant radiating tube 3 and the second fixed plate 2, neck 2-1, refrigerant are laid with the second fixed plate 2
Radiating tube 3 is laid in neck 2-1；Neck 2-1 is adapted to refrigerant radiating tube 3, and neck 2-1 is close to refrigerant radiating tube 3, and refrigerant dissipates
The contact area A2 of the fixed plate 2 of heat pipe 3 and second is the contact area of refrigerant radiating tube 3 and neck 2-1.This design was both easy to
The contact area of refrigerant radiating tube and the second fixed plate can be increased in refrigerant radiating tube insertion neck again, improve radiating effect.
In order to further improve radiating effect, neck 2-1 can it is fully wrapped around live refrigerant radiating tube 3, i.e. A2=π * d*L, d be
The diameter of refrigerant radiating tube, L are refrigerant radiating tube and the contact length of the second fixed plate.
In order to further be easy to dismount refrigerant radiating tube 3 and the second fixed plate 2, neck 2-1 cross section is the 3/ of circumference
4, i.e. neck 2-1 has the otch of quarter turn, is easy to refrigerant radiating tube to pass in and out neck；Neck 2-1 wraps refrigerant radiating tube
3/4 circumference；That is A2=π * d*L*3/4, d are the diameter of refrigerant radiating tube, and L grows for the contact with the second fixed plate of refrigerant radiating tube
Degree.
In step S15, when readjusting the variable element of radiator structure, due to refrigerant radiating tube and the second fixed plate
Contact area A2 is easy to adjust, therefore readjusts refrigerant radiating tube and the contact area A2 of the second fixed plate first, performs step
Rapid S13, S14, if after the contact area A2 for readjusting refrigerant radiating tube and the second fixed plate sets times N (such as 4 times), currently
Temperature Ta is not still in the range of design temperature, then readjusts A3, A1, R1 (i.e. R11, R12), R2, r1, r2, r3, performs step
S13、S14。
Readjusting the contact area A2 of refrigerant radiating tube and the second fixed plate mainly includes readjusting refrigerant radiating tube
The diameter d of contact length L, refrigerant radiating tube with the second fixed plate, it is easy to adjust, be easy to implement.
Because diameter d than contact length L is more convenient for adjusting, therefore readjust connecing for refrigerant radiating tube and the second fixed plate
When touching the diameter d of length L, refrigerant radiating tube, refrigerant radiating tube and the contact length L of the second fixed plate are readjusted first, is held
Row step S13, S14, if the contact length L first for readjusting refrigerant radiating tube and the second fixed plate sets times N 1 (such as 3
It is secondary) after, Current Temperatures Ta is not still in the range of design temperature, then adjusts the diameter d of refrigerant radiating tube, performs step S13, S14.
The number for adjusting refrigerant radiating pipe diameter d is no more than the second setting times N 2 (such as 1 time)；First setting times N 1 and second is set
The sum of times N 2 is equal to setting times N.By being that U-tube, N shapes pipe, M shapes pipe are cold to adjust by the Adjusting Shape of refrigerant radiating tube
The contact length L of matchmaker's radiating tube and the second fixed plate.
If after the contact area A2 setting times Ns for readjusting refrigerant radiating tube and the second fixed plate, Current Temperatures Ta is still
Not in the range of design temperature, then readjust A3, A1, R1 (i.e. R11, R12), R2, r1, r2, r3；Readjust A3, A1,
When R1, R2, r1, r2, r3, A3 is readjusted first, performs step S13, S14, if after readjusting A3 setting numbers, current temperature
Ta is spent still not in the range of design temperature, then readjust A1, R1, R2, r1, r2, r3, performs step S13, S14.
R1 is adjusted by adjusting R11, R12.Because thermal resistance is relevant with the length in thermal conductivity factor, conduction orientation, therefore
Thermal resistance is adjusted, when adjustment thermal conductivity factor, second, the medium length of conduction orientation, that is, medium thickness.
In the present embodiment, the first fixed plate is identical with the second fixed plate material, using aluminium sheet, good heat dissipation effect；The
Two fixed plates contact with the first fixed plate for face, and are bolted, and are easy to dismount, and are easy to the installation and removal of production line,
Greatly improve production efficiency, and be easy to market to detect after sale, repair and change, reduce production cost and maintenance into
This.
To sum up, when readjusting the variable element of radiator structure, according to the complexity of adjustment, according to easy first and difficult later suitable
Sequence is adjusted：Preferential adjustment refrigerant radiating tube and the contact area A2 of the second fixed plate, secondly adjust first fixed plate and the
The contact area A3 of two fixed plates, A1, R1, R2, r1, r2, r3 are finally adjusted, the radiating having had to cause radiator structure is imitated
Fruit, meet radiating requirements, and it is easy to adjust, cost is low.
The radiator structure of variable element is determined based on the above method so that the temperature of radiating element is maintained at design temperature
In the range of, ensure the normal operation of radiating element and air-conditioning, reliability is high, cost is low；Radiated using refrigerant, energy-conservation can
Lean on, ensure the long-term high-efficiency operation of heater members；Cost is low, easy to installation and maintenance, is easy to dismount, improves production efficiency,
It is easy to market to detect after sale, repair and changes, reduces the production cost and maintenance cost of radiator structure.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied the present invention is described in detail, for the person of ordinary skill of the art, still can be to foregoing implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of claimed technical solution of the invention.
Claims (10)
- A kind of 1. air-conditioning heat dissipation structural parameter determining method, it is characterised in that：The radiator structure includes fixed plate, refrigerant radiates Pipe, one side and the air-conditioning heater members of the fixed plate are fixed, and another side and the refrigerant radiating tube of the fixed plate are fixed, described In refrigerant pipeline of the refrigerant radiating tube serial or parallel connection between outdoor heat exchanger of air conditioner and indoor heat exchanger；Methods described includes：（1）Obtain the heat radiation power P of heater members, the limit high temperature T1 of heater members, the refrigerant temperature of refrigerant radiating tube inlet T2；Calculate △ T=T1- T2；（2）According to heat-conduction principle, the variable element of predetermined heat dissipation structure：Thermal resistance R1 of the variable element of radiator structure including fixed plate, fixed plate and heater members contact area A1, refrigerant dissipate Heat pipe and the contact area A2 of fixed plate, the thermal resistance R2 of refrigerant radiating tube；（3）After operation of air conditioner setting time, the Current Temperatures Ta of heater members is gathered；（4）Judge Current Temperatures Ta whether in the range of design temperature；If it is not, the variable element of radiator structure is then readjusted, and return to step（3）.
- 2. according to the method for claim 1, it is characterised in that：The fixed plate includes the first fixed plate and second and fixed Plate, first fixed plate are fixed with heater members, and second fixed plate is fixed with the first fixed plate, second fixed plate Fixed with refrigerant radiating tube；First fixed plate and the contact area of heater members are A1, refrigerant radiating tube and the contact area of the second fixed plate are A2；The contact area of first fixed plate and the second fixed plate is A3；The variable element of radiator structure also includes contact area A3, the heat of the first fixed plate of the first fixed plate and the second fixed plate Hinder R11, thermal resistance R12, R11+ R12=R1 of the second fixed plate.
- 3. according to the method for claim 2, it is characterised in that：The heat-conducting medium that thermal resistance is r1 is scribbled on the contact surface of the first fixed plate and heater members,The heat-conducting medium that thermal resistance is r2 is scribbled on refrigerant radiating tube and the contact surface of the second fixed plate,The heat-conducting medium that thermal resistance is r3 is scribbled on the contact surface of the first fixed plate and the second fixed plate；The variable element of radiator structure also includes thermal resistance r1, r2, r3.
- 4. according to the method for claim 2, it is characterised in that：Neck, refrigerant radiating tube cloth are laid with second fixed plate It is located in neck, the contact area of refrigerant radiating tube and the second fixed plate is the contact area of refrigerant radiating tube and neck.
- 5. according to the method for claim 4, it is characterised in that：The contact area of refrigerant radiating tube and the second fixed plate is A2 =π * d*L*3/4, d are the diameter of refrigerant radiating tube, and L is refrigerant radiating tube and the contact length of the second fixed plate.
- 6. according to the method for claim 2, it is characterised in that：It is heavy first when readjusting the variable element of radiator structure The contact area A2 of new adjustment refrigerant radiating tube and the second fixed plate, performs step（3）、（4）If readjust refrigerant radiating tube After the contact area A2 setting numbers of the second fixed plate, Current Temperatures Ta is not still in the range of design temperature, then readjust A3, A1, R1, R2, perform step（3）、（4）.
- 7. according to the method for claim 6, it is characterised in that：Readjust contact of the refrigerant radiating tube with the second fixed plate Area A2 includes contact length, the diameter of refrigerant radiating tube for readjusting refrigerant radiating tube and the second fixed plate.
- 8. according to the method for claim 7, it is characterised in that：Readjust contact of the refrigerant radiating tube with the second fixed plate Length, refrigerant radiating tube diameter when,Refrigerant radiating tube and the contact length of the second fixed plate are readjusted first, perform step（3）、（4）If readjust cold After matchmaker's radiating tube and the contact length of the second fixed plate first set number, Current Temperatures Ta still not in the range of design temperature, The diameter of refrigerant radiating tube is adjusted again, performs step（3）、（4）；The number for adjusting refrigerant radiating pipe diameter is no more than the second setting number；First setting number and the second setting number sum Equal to setting number.
- 9. according to the method for claim 6, it is characterised in that：When readjusting A3, A1, R1, R2, readjust first A3, perform step（3）、（4）If after readjusting A3 setting numbers, Current Temperatures Ta is not still in the range of design temperature, then weigh New adjustment A1, R1, R2, perform step（3）、（4）.
- A kind of 10. air-conditioning heat dissipation structure of the method based on any one of the claims 1 to 9, it is characterised in that：Bag Include fixed plate, refrigerant radiating tube, one side and the air-conditioning heater members of the fixed plate are fixed, the another side of the fixed plate with it is cold Matchmaker's radiating tube is fixed, refrigerant pipe of the refrigerant radiating tube serial or parallel connection between outdoor heat exchanger of air conditioner and indoor heat exchanger Lu Zhong.
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| CN112815495A (en) * | 2021-01-11 | 2021-05-18 | 珠海格力电器股份有限公司 | Thermal protection device and method for air conditioner indoor unit and air conditioner |
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| CN107355914B (en) | 2020-07-07 |
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Effective date of registration: 20201113 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. |